- 1 year ago
Trying using Help and Verbose while parsing command line arguments
When parsing command-line arguments in Python, you can use the argparse
module to handle help and verbosity options. The argparse
module makes it easy to define and parse command-line arguments, including handling help messages and verbosity levels.
Here's an example of how to use argparse
with help and verbose options:
pythonimport argparse
def main():
# Create ArgumentParser object
parser = argparse.ArgumentParser(description='My command-line program.')
# Add positional arguments (if any)
parser.add_argument('input_file', type=str, help='Input file path')
# Add optional arguments (e.g., help and verbose)
parser.add_argument('-v', '--verbose', action='store_true', help='Enable verbose output')
parser.add_argument('-H', '--help', action='help', help='Show this help message and exit')
# Parse the command-line arguments
args = parser.parse_args()
# Access the parsed arguments
input_file = args.input_file
verbose = args.verbose
# Your program logic here...
if verbose:
print('Verbose mode is enabled.')
print(f'Input file: {input_file}')
if __name__ == "__main__":
main()
In this example, we use the argparse.ArgumentParser
class to create a parser for our command-line arguments. We add a positional argument for the input file and two optional arguments for help (-H
or --help
) and verbosity (-v
or --verbose
). The -H
or --help
option will display the help message and exit the program. The -v
or --verbose
option is a flag, and if specified, it will set the verbose
variable to True
.
You can run the script with different options:
- To display the help message:
python script.py -H
orpython script.py --help
- To enable verbose mode:
python script.py -v input_file.txt
The argparse
module automatically generates a help message based on the arguments you defined, making it easy for users to understand how to use your script. Additionally, the -h
or --help
option is automatically available for all ArgumentParser objects.
Make sure to replace script.py
with the actual name of your Python script.